Draft rigging



- Mrch 26, 1935,. E. H. BLATTNER l 1,996,038 .I

Filed June 11, 1950 WIW/7 f M16/5mm, V

its normal position andinterfering with the` draft 'key 15. VThe retaining means or cotter is protected by being between and disposed below thethereof is normally received in an aperture-25 in the supporting web'or shelf26 formed on the lowe r ange- 12 offthe swivel block. I'nasm'uch as there is no tendency for the pin 7 to move up wardly, a cotter need not 'be used in the. head aperture. Y 1

The manner ofy connecting the stem l and swivel block l0 may be as follows: `The swivel block may be fitted overlthe anges,2. and'f3 ontheStem-j and the lower pin '7 ,dropped into` place'through.:

1 the registering pin-receiving` apertures in thefin:

'i `at? the coupler` andswivel block, not illustrated, cory y l upper surface of said block havinglugs.iipstanti` tercalatedv anges of the mmbers.'1'he :upper `pin6 may then be dropped from the topand it'` ispreferably received on a tool or any desired means whereby after insertion-of the platel22`l 'in place, they pinV 6 may -be raised tothe position' shown in YFig.` 2 with itsreduced headijusection passing through` the aperture 23y in the plate 22, whereupon it-may bellocked in position by means' oftagc'ottery orthelike 24'. f

f A47Referring now-to the embodimentof myfinvenf tion'illustrated'inFigs'. 3 and`4,-` thereis shown;

`a fragmentary portionof aswvel block-on butt portion`r` 10a Iof a couplerfsuch.. asfshown" in `Figs lfandg with an upper pivot pin 6 corresponding Y only theV upper pivot'pinand corresponding por-'-` tionfof. the swivel block is illustrated, it will,l be

understood that the lower -pinf and remainderof 'responds to'that-shown in Figs lfandr2.

*said pin,- not'v shown, doesrnotextend intozthe,

As in thefirst embodiment, thepivotpin 6a is i relatively-'short and isprovided with 'a `head 18e." 401 for-limiting'inward movement with respect 4to the swivel block` whereby `the inner.;y or g lower.. end of coupler slot to interfere with the associated'draft -key,f`as inthe first embodiment. Inorderto retain thepin 6a in position, the lupperfiiangelll ofi lthe' VswivelA block' is preferably formed a .pair of lugs 202" and 219-` grooved 'for guid-V ing' and retaining. a *preferably ilat .pin retainer. 22B. `-The retainer 22j1^is preferably fapertured;

as indicated at" 23,`ffor receiving' kthe head f-,thev pin 6F; saidv head` beyond theA 'plate 22e, when'fin position,f'lbe ing desirably-apertured as in Y the first-embodiment, .forlreceiving' a cotter or other retaining means 24.i for locking thepinand yretaini'rlg plattogetherj and in position, thereby v preventing `undesired removalof the pinand pre-A :venting it lfrom dropping'bel'ow'its; normal posi- .tioniand interfering with the associateddraftkey.

,'Itwillbe seen thatthe' difference between the embodiment of Figures 3 and 4 and' that ofzFigS:

l and 2 isthatthe'retainer'plate22fis inserted and removed transversely of the coupler, while the retaining plate 22 *of ith'e rfirst embodiment is in- `1 sertedifor.removed@longitudinally of `the 'coupler and the lugs '2011,' and 121e aremerely groovedl'or holding: the edges o'f the retainer while the'flugs 20 an'd`2l are 'slotted :to receive the endsof the that have devised improved swivel'fbutt couplerfin which` theparts thereoffare pivotally v connected'bya pair ofJ identical `pins whichfare retainedfinplace softhatnot only `is undesiredjre'l` tending downwardly infsaid apertures` from, the

vSides Qf Said apertures@ re retainer'andprotected 'by'fbeing vbetw psedfbelowth topsor, saidiugs.'

moval or loss prevented, but theupper pinis not allowed to drop below its normal position intoy the key slot .to interfere with the associated draft i' key.

` Although I have disclosed'a preferred'ernbodi-fv 5 I ment of my invention, it will `be "understood that modifications may be made within the spirit and SCOP@- ofrthzafppended claims:-l f f i L 1. A coupler with an `articulated shank comprisingastem portion and a block 'intercalated with 'respectto said stem portion and provided f kwith' registering` aperturesa dra-ft key slot in said lshank, meansufor pivotally connectingsaid stem I portion andblock comprising 'afpivot member ex. :tendingjdownwardl'y saidaperturesfrom the L top of said shankapproximately tosaid slot, said v pivot member having'areduced head section, the

uppersurface of said block havinglugs upstandl ing therefrom on opposite sides of said apertures, a. :retainer guidedfby andi extending between said lugs, saidretainer Shaving an 'aperture Vreceiving the 'reduced head section' bi' saidy pivot member.

and cotter means passing,fthroughjjsaidreduced.y 1 head sectior'with .the end portions normally rest-f tween and'fdisposed'ybelow fthe tops oif said tlu'g's."v

` 2. :A coupler fwithfanarticulated.'shank com-v prising` aigstem `portion andsa v blocl intercalated with respect `I to f. said f stem :portion and providedwith registeringl apertures, a draft key slot'insaid shank, ,means for .pivotallyz connecting*said` stem portionandblock comprising a. pivotmember vex.`

topA of `saidishank approximately .to said slot, said" pivot member having .a reducedghead section, V,the

heed section with`,the end'.v portions normalivrest-` j ing on said retainer.: .1

1: 53,. l.lr-couplerwithv anrticulated come.: prising fr av stem r portion 1. ajndf a .blocky -intercalated` v with respectjto said-,stem l portion".and-:1Jroviledfk with registeringfaperturleafafdraitfkey SIQtinsaidr Shank. means Iorgpivotallyconnectinssaidstem' portion .aand nbloke .czfnnprising,v ,a pivot 'member' whith extends'downwarfdlyztrom the..ton}o1;si,d shanktapprwdmatelyf-to .said` slot and ..it-receiv'si insaid. apertures. rninidrpivot memberhavins--a .re-1. dud'hea'd section theiimper.surfant-0f.v said blockhavins ,flugs fupstaildis. therefrom. n-.oppbsi.tef tair'ler suddpyf-and: extending between said'luss wldI retainer having an J.fiveliilfetresvin'fsf the .Jdellea Settim 0f .Said Pivot ,member @Molding means.. liess'- ing through saidreducedhead sectie abovesaid- 4. A coupler with an articulated shnlicompris-k` ing astemjpqrtimais,,mocki'tntertgiatd'with "if respect to 'salidfsteili portionahd `r ided portion andblock. comprising'a pivot ine'nib tending dernwafdlygin.Safeevertres vfrein the" top of said 'slank approximately to saidfslotgf'said uppersurface of said blockffliving .lugs upstandingthereirorn'onfoppditel-sides of said :section ends receivedlin ing lon saidjretaiher andbrotectedby beingbe-ngd f' 3oL pivot member'hearing;a.'reducedhead sectionfftheV tween said lugs, sa.id retainer having an aperture receiving the reduced head section of said pivot member, and cotter means passing through said reducedhead section with the end portions normally resting on said retainer and protected by being between and disposed below the tops of said lugs. c

5. A coupler with an articulated shank compris-J ing a stem portion and a block intercalated with respect to said stem portion and provided with registering apertures, a draft key slot in said shank, means for pivotally connecting said'stem portion and block comprising a pivot member extending downwardly in'` said apertures from the` top of said shank approximately to said slot, said upper surface of said block having lugs upstandpivot member having a reduced head section, the

retainer extending between said lugs and with edge portions underlying said spaced portions,

saidretainer having an aperture receiving the reduced headv section of said pivot member, and cotter means passing ythrough said reduced head section with the end portionsl normally resting on said retainer and protected by being between and disposed below the tops of said lugs.

` `vEMIL H. BLATTNER. Y 15y 

